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20090804
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a sign of things to come. tucker barnes joins us with more on what we can expect this afternoon as far as heat. >> well i have an update. it's no longer 77, it's now 83 at reagan national. we'll be in the low 90s this afternoon. and we'll see humidity in there as well. so a summery afternoon. dog days of august are here. 83 at reagan national. dulles, 84, bwi marshall 82. so it's a hot and sweaty morning. i guess the good news in the forecast is we're not expecting much in the way of shower or thunderstorm activitivas hings should remain quiet ouast there there is a look at your satellite radar. a frontal sf teofm tcohe t as and that's responsible for the cloud cover and light showers well t snd aths eat lltho ou s th and east n a big thunderndem complex out to west. i think later today we'll see some clouds from the thunderstorm complex move in here. so there might be a little bit of high-level cloudiness but that's the worst of the forecast as the showers and thunderstorms should hold off for one more day. mostly sunny, a hot afternoon. a 92 expected here in washington. so plan acco
. this is most popular segment in local television. tucker barnes an i put our big geeky weather heads together to answer your most pressing questions. today's question is from troy fairette. that is like a football player. >> old movie star too. >> he could be a reporter. let's go to troy garrett. he says while he was on a flight, pilot anumbered that the outside air temperature was minus 50 degrees while the ground temperature was 75 degrees. we were trying at an altitude of 30,000 feet. why is the temperature so cold up there and warmer on the ground espare closer to the sun when flying? >> sounded like it was going to be who gets there first questions swra i thought it would be a math question which we wouldn't have used it. you could have answered it. that is a great question. you would think the closer to the sun, you're 30,000 feet above the surface of the earth, it will be warmer. no, the high are up you go, the colder it gets. remember, space is cold. why is that so? let's go to science man tucker barnes for the answer. >> good question though. >> it's great question. >> the next time
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